Not sure your point. I was addressing fearmongering as it relates to the end of the world. You seem to be deflecting to how certain religions view sexual behavior.
I initially went to college as a secular religious studies major. If you wanted to look at religion from a very secular perspective, you would say religion was a form of institutionalizing behavior that had proven to be "successful" for humans as a species whose greatest threats came from other human beings.
Viewed from that perspective, nearly all religions in the world discouraged behavior that was not based on the nuclear extended family (with exceptions), since that "model" had proven to be the most effective at raising the young of the society and adding to its numbers over history. In other words, think of religion as "codified" successful behaviors of the past.
Some societies tried to veer away from the nuclear family, like the Shakers who did not embrace a nuclear family structure and went so far as to discourage any sexual relationships... and of course, they died out when people outside their community stopped joining.
In other instances, some religions like Islam embraced polygamy since it emerged as a religion among people who had both high adult male mortality rates due to tribal warfare and high infant mortality rates. In that situation, without polygamy their population would have collapsed.
Continuing to view things purely from a secular perspective, the fact that society is becoming more accepting of non-heterosexual relationships and heterosexual ones, where the couple do not intend to "produce" progeny reflects the changing views of society regarding the necessity of producing children in face of the changing times.
In other words, today's views are not more "enlightened", they simply reflect the changing times... and in the future times will likely change again...
All of this leads to the unanswered question of how will "aging societies" function. If you believe some of the movies of the past, your concerns about "obsessive focus" by some religions on the nuclear family will be replaced with a more obsessive concern about how to deal with an aging population. Without nuclear families to care for them, where will they turn. How much will you be expected to care for people you don't know. What if you got a letter tomorrow saying an elderly couple is being sent to your home for you to care for them?
Lastly, the "Handmaiden's Tale" is an interesting book as it paints a picture of how society might change in a world where to few women exist that can produce progeny. Why all this talk about "progeny", because at the species level, it is what drives how society organizes itself and that is captured in its religions.
Humans have reached society is moving away from the need for most of its citizens to produce children to grow to one more based on merely sustaining or even shrinking itself. That will lead to more openness regarding sexual behaviors that produce no progeny. How long that lasts will be something I most likely won't live to see.
